/*
 * Copyright 2012-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.assertj.core.util;

/**
 * @author Mariusz Smykula
 */
public class Hexadecimals {

  protected static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();

  public static String byteToHexString(byte b) {
    int v = b & 0xFF;
    return new String(new char[] { HEX_ARRAY[v >>> 4], HEX_ARRAY[v & 0x0F] });
  }

  public static String toHexString(byte... bytes) {
    StringBuilder stringBuilder = new StringBuilder();
    for (byte b : bytes)
      stringBuilder.append(byteToHexString(b));

    return stringBuilder.toString();
  }

  private Hexadecimals() {}
}
